中高渗透砂岩储层地质建模应注意的几个问题
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摘要
针对中高渗透砂岩储层地质建模中应注意的几个常见问题进行了探讨,提出了通过储层反演、结合沉积规律以及参照常规地震剖面等方法,合理确定砂体边界。针对多方向展布单一砂体或大范围内不同展布方向的多个砂体,在属性参数随机建模中确定变差函数的主变程方向时,应采取在平面上用"流线趋势"作协约束条件、将沉积微相作为主要控制条件的处理方法。对于分布稳定的夹层,建模时可以把夹层作为分层来处理,分布不稳定的夹层适于采用随机建模方法。平面网格粗化建议分为油区内部、油水过渡带和油区外部3部分进行不同程度的合理粗化。应从基础数据和建模的几个关键环节加强模型的质量控制。
Several familiar issues of geologic modeling in middle-high permeabilitysandstone reservoir were discussed.The sand body boundary can be confirmed by some methods of reservoir inversion,sedimentary regularity,regular seismic section and so on.In view of a single sand body with several directions distribution or several sand bodies with different directions distribution in large scale,"flow trend" in plane as co-constraints and sedimentary microfacies as the main controlled condition were the main processingmethods when major range was defined during stochastic modeling of attribute parameter.The interlayer stably distributing could be regard as layers.And stochastic modeling could simulatethe unstable distributional interlayer.Grid upscaling in plane should be separated into the internal oil pool,transitional zone from oil to water and the external oil pool.Using basic data and several key links of modeling can control the model quality.
Several familiar issues of geologic modeling in middle-high permeabilitysandstone reservoir were discussed.The sand body boundary can be confirmed by some methods of reservoir inversion,sedimentary regularity,regular seismic section and so on.In view of a single sand body with several directions distribution or several sand bodies with different directions distribution in large scale,"flow trend" in plane as co-constraints and sedimentary microfacies as the main controlled condition were the main processingmethods when major range was defined during stochastic modeling of attribute parameter.The interlayer stably distributing could be regard as layers.And stochastic modeling could simulatethe unstable distributional interlayer.Grid upscaling in plane should be separated into the internal oil pool,transitional zone from oil to water and the external oil pool.Using basic data and several key links of modeling can control the model quality.
引文
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[2]吴永彬,张义堂,伍增贵,等.基于PETREL的油藏三维可视化地质建模技术[J].石油工业计算机应用,2007,15(1):21-24.
[3]陈利.平湖油气田花港组油藏储层三维模型建立[J].油气地质与采收率,2006,13(3):22-24.
[4]隋淑玲.河流相储层三维流动单元模型建立——以孤东油田七区馆上段为例[J].油气地质与采收率,2005,12(3):12-14.
[5]杜铭,郭康良.沙15块油藏储层相控建模研究[J].石油天然气学报,2006,28(6):46-47.
[6]周红,国梁,杨湖川.大王北油田大48井区储层建模研究[J].新疆石油天然气,2006,2(2):40-43.
[7]綦金丽,孙强.Petrel构造建模技术在聚驱注采系统调整中的应用[J].大庆石油学院学报,2006,30(6):43-45.
[8]王延章,林承焰,温长云,等.夹层对油藏的控制作用分析——以准噶尔盆地中部1区块莫西庄地区三工河组为例[J].油气地质与采收率,2006,13(2):17-20.
[9]刘军,李玉君.地震信息在油田开发中后期沉积微相随机建模中的应用——以辽河油田东部凹陷龙10块沙三段下亚段为例[J].油气地质与采收率,2007,14(1):60-62.
[10]石晓燕.Petrel软件在精细地质建模中的应用[J].新疆石油地质,2007,28(6):773-774.
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